Malicious PDF — malware analysis report

Static analysis result for SHA-256 9443f8ddd5d700f9…

MALICIOUS

PDF

64.7 KB Created: 2021-01-17 15:03:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8db0fb37b8136cb0079d32a34ed92503 SHA-1: b51050c441fbdc46a6ba29491b67eb097aff2a88 SHA-256: 9443f8ddd5d700f9577fe1a0ef59048c51323e94cb59534689731c460cbb7ea8
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with at least one pointing to a known malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs suggests the document is designed to redirect users to external, potentially harmful, sites, likely as part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffmen.ru/123?utm_term=daily+geography+grade+4+week+6+answers In PDF document text
    • https://jufopikigon.weebly.com/uploads/1/3/4/3/134309667/7053852.pdfIn PDF document text
    • https://site-1168140.mozfiles.com/files/1168140/16357639578.pdfIn PDF document text
    • https://cdn.sqhk.co/zunesunatiri/iICigjb/hit_the_roof_meaning_and_example.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390330/normal_5fad4aba87ac1.pdfIn PDF document text
    • https://site-1174542.mozfiles.com/files/1174542/23856270230.pdfIn PDF document text
    • https://site-1167955.mozfiles.com/files/1167955/zezopofavozewafifokabu.pdfIn PDF document text
    • https://cdn.sqhk.co/pumibavi/n3biebn/cabify_colombia_conductor.pdfIn PDF document text
    • https://cdn.sqhk.co/fopujetoros/ifhfig2/95420880047.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380525/normal_5fbe191a0ee4e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497368/normal_6003debfea773.pdfIn PDF document text
    • https://site-1177330.mozfiles.com/files/1177330/super_fancy_pants_adventure_part_1.pdfIn PDF document text
    • https://site-1166704.mozfiles.com/files/1166704/herpes_simplex_virus_culture_w_rfl_to_typing.pdfIn PDF document text
    • https://cdn.sqhk.co/putizimetiwe/fYhebl6/99655840966.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pilazi/chelsea_vs_arsenal_formation_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/boxing_star_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/solitary_reaper_question_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/34830993833.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/73579442878.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/equilateral_triangles_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/niwazurujuturu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c06c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC06C 5720 bytes
SHA-256: 4ab2925b2a004c74ff02937029f7891f0adcbeab999019e36607eded6f418a21
font_01_sfnt_off0000d409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD409 9776 bytes
SHA-256: 1aabc934649b6928812d6176ada2888d7c4638d74f49ac360caa2ed002a15d1b

Open this report in the interactive analyzer, or submit your own file for analysis.